
solidus = '╱'
r_solidus = '╲'

def dimond_input():
    while True:
        ret = int(input('Please input size:'))
        if ret % 2 == 0 and ret >= 2:
            return ret
    

def main():
    line_num = dimond_input()
    half_line_num = line_num // 2
    for i in range(1, half_line_num + 1):
        line = ''
        for space in range(half_line_num - i):
            line += ' '
        line += solidus
        for space in range(2 * i - 2):
            line += ' '
        line += r_solidus
        print(line)

    for i in range(half_line_num, 0, -1):
        line = ''
        for space in range(half_line_num - i):
            line += ' '
        line += r_solidus
        for space in range(2 * i - 2):
            line += ' '
        line += solidus
        print(line)


main()